Update Flux requirement to 0.16.10 in /docs (#87)

Updates the requirements on [Flux](https://github.com/FluxML/Flux.jl) to permit the latest version.
- [Release notes](https://github.com/FluxML/Flux.jl/releases)
- [Changelog](https://github.com/FluxML/Flux.jl/blob/master/NEWS.md)
- [Commits](FluxML/Flux.jl@v0.1.0...v0.16.10)

---
updated-dependencies:
- dependency-name: Flux
  dependency-version: 0.16.10
  dependency-type: direct:production
...

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docs/Project.toml

@@ -9,6 +9,7 @@ Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 [compat]
 DecisionFocusedLearningBenchmarks = "0.6.0"
 Documenter = "1.17.0"
+Flux = "0.16.10"
 InferOpt = "0.7.2"
 Literate = "2.21.0"
 Plots = "1.41.6"